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單項(xiàng)選擇題

Temporary seizings on wire rope are made with（）.

A.marline
B.sail twine
C.tape
D.wire

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單項(xiàng)選擇題

Sufficient cargo tanks shall be（）prior to each ballast voyage in order that，taking into account the tanker’s trading pattern and expected weather conditions，ballast water is put only into cargo tanks which have been crude oil washed.

A.inerted
B.crude oil washed
C.gas freed
D.batterned down

單項(xiàng)選擇題

Stuffer-braid rope has（）.

A.a yarn core
B.no core
C.three strands
D.12 threads

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